Inexpensive position sensing device

ABSTRACT

Inexpensive position sensing devices that allow widespread use and availability of position information are disclosed. One embodiment of the position-sensing device acquires, down converts and extracts raw position data from position signals. Then, the position-sensing device wirelessly transmits the raw position data to a position-computing device, which converts the raw position data into the position of the device. The position-computing device can also receive auxiliary information from auxiliary sensors, and perform analyses based on the position and the auxiliary information. The position-computing device can re-transmit the position and auxiliary information to a remote site for further analysis and/or central storage. The remote site can also download information to the position-computing device. The position-computing device can also control an actuator to perform an operation.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims benefit of (i) U.S. Provisional PatentApplication No. 60/444,198, filed Jan. 30, 2003, and entitled “SYSTEM,METHOD AND APPARATUS FOR ACQUIRING, PRESENTING, MONITORING, DELIVERING,MANAGING AND USING STATUS INFORMATION,” which is hereby incorporatedherein by reference; (ii) U.S. Provisional Patent Application No.60/418,491, filed Oct. 15, 2002, and entitled “SYSTEM, METHOD ANDAPPARATUS FOR ACQUIRING, PRESENTING, MONITORING, DELIVERING, MANAGINGAND USING STATUS INFORMATION,” which is hereby incorporated herein byreference; (iii) U.S. Provisional Patent Application No. 60/404,645,filed Aug. 19, 2002, and entitled “SYSTEM, METHOD AND APPARATUS FORACQUIRING, PRESENTING, MONITORING, DELIVERING, MANAGING AND USINGPOSITION AND OTHER INFORMATION,” which is hereby incorporated herein byreference; and (iv) U.S. Provisional Patent Application No. 60/375,998,filed Apr. 24, 2002, and entitled “SYSTEM, METHOD AND APPARATUS FORACQUIRING, PRESENTING, MANAGING AND USING POSITION INFORMATION,” whichis hereby incorporated herein by reference.

This application is also related to: (i) U.S. patent application Ser.No. 10/397,473, filed Mar. 26, 2003, and entitled “METHOD AND APPARATUSFOR INTELLIGENT ACQUISITION OF POSITION INFORMATION;” (ii) U.S. patentapplication Ser. No. 10/397,472, filed Mar. 26, 2003, and entitled“METHODS AND APPARATUS TO ANALYZE AND PRESENT LOCATION INFORMATION;”(iii) U.S. patent application Ser. No. 10/397,641, filed Mar. 26, 2003,and entitled “METHOD AND SYSTEM FOR PERSONALIZED MEDICAL MONITORING ANDNOTIFICATIONS THEREFOR;” (iv) U.S. patent application Ser. No.10/397,637, filed Mar. 26, 2003, and entitled “METHOD AND SYSTEM FORPROVIDING SHIPMENT TRACKING AND NOTIFICATIONS;” (v) U.S. patentapplication Ser. No. 10/397,474, filed Mar. 26, 2003, and entitled“METHOD AND SYSTEM FOR ENHANCED MESSAGING;” (vi) U.S. patent applicationSer. No. 10/397,512, filed Mar. 26, 2003, and entitled “APPLICATIONS OFSTATUS INFORMATION FOR INVENTORY MANAGEMENT.”

BACKGROUND OF THE INVENTION

The present invention relates generally to a position-sensing device andmore particularly to an inexpensive position-sensing device that mayinclude other types of sensors.

It is extremely useful to be able to automatically and continuallyidentify the location of an object or a person, particularly if this canbe done inexpensively. Imagine a week from now is your first weddinganniversary. Due to business reasons, you suddenly are called to travelto a remote site, thousands of miles away from your spouse. She isterribly annoyed by your absence. It is an important day. Fortunately,immediately after arrival at the site, you have succeeded in getting hersome very nice gifts. An express service promises that she will get thegifts exactly on the anniversary day, which is four days from now.Wouldn't it give you the peace of mind if you could periodically trackthe location of the package during the next four days? Four days later,assuming that the gifts will be arriving at your home in the next twentyminutes, wouldn't she be thrilled if she gets an intimate call from you,and during the call, the gifts arrive right at her doorsteps? Sheprobably will forgive you for not being with her during the firstwedding anniversary. There may even be some pleasant surprises waitingfor you when you get home!

Let's step back and assume that the gifts include a pair of exoticfruits from the Orient. You know your spouse has never tasted suchfruits before and she would love to taste them. You also know it isgoing to take four days before the gifts reach your house. To keep theirfreshness, the fruits have to be refrigerated during the trip at atemperature below 50 degree Fahrenheit. The express service guaranteesthat your gifts will be kept at low temperature, not higher than 45degrees. You constantly worry that the power to the refrigerator may beaccidentally turned off, causing the temperature to gradually go up, andruining the fruits. Wouldn't you be willing to pay a small price if theexpress service provides a feature where your pager would beep if theambient temperature of your gifts goes above 45 degrees? This will thenallow you to immediately call the express service and sound the alarm.

Even if what have been described is technologically feasible, it wouldprobably be prohibitively expensive. One of the critical barriers is theposition sensor indicating the location of the gifts. A typicalglobal-positioning system (GPS) receiver, such as one in a car, costsabout two thousand dollars (US$2000.00). A handheld GPS system forhiking costs more than two hundred and fifty dollars (US$250.00). Theauto manufacturers may be able to afford to have such an expensive itemfor vehicle navigation of automobiles. It is inconceivable to expectcommon citizens to be able to afford such a device.

In addition, the sizes of the systems can be an annoying factor. Youdon't want the systems to be a few times larger in size or heavier inweight than your gifts. The cost of transport will then be predominatelydue to the systems. Imagine you are using Federal Express to send yourcompany brochure—a few ounces—to a customer. It is unreasonable toattach a four-pound GPS system to the Federal Express package. One wayto get around this hurdle is wait till there is a critical massaccumulated before shipping to a destination. But, customers go for anexpress service because they want speedy delivery, and thus are probablynot willing to wait.

It should be apparent from the foregoing that there is a genuine needfor an inexpensive position-sensing device. Such a device would probablybe suitable for many more applications if it has a small form factor.

SUMMARY OF THE INVENTION

In general, the present invention relates to an inexpensiveposition-sensing device that allows widespread use and availability ofposition information. The availability of position information in aninexpensive manner is highly desirable. However, there are a number offactors preventing such availability, such as cost and, sometimes, thesize of the sensors. In one approach, the present invention provides aninexpensive position-sensing device that can be attached to or locatedon an object. In another embodiment, the position-sensing device is in aconvenient form factor applicable for transport. Based on a number ofembodiments of the present invention, position information can becomenot only a sought-after feature, but also a common commodity.

One embodiment of the invention includes a position-sensing device,which can be based on GPS technology. After acquiring position signals,the device extracts raw position data from the signals. Then, the devicewirelessly transmits the raw position data to a position-computingdevice. The position-computing device can be used to convert the rawposition data received into the position of the position-sensing device.The position-computing device can also receive auxiliary informationfrom auxiliary sensors. Further analysis can then be performed based onthe position and the auxiliary information. Examples of auxiliarysensors are pressure sensor, smoke detectors and heat sensors. Theauxiliary sensors can capture their corresponding auxiliary informationand provide them to the position-computing device.

The position-computing device can re-transmit the position of theposition-sensing device with the auxiliary information to a remote sitefor additional analysis. The remote site can include a website. Theremote site can provide additional intelligence and send different typesof information back to the position-computing device. For example,location, map or traffic information can be downloaded to theposition-computing device.

The position-computing device can also control an actuator. Based on ananalysis performed by the remote site, the position-computing device cansend a signal to an actuator to perform an operation. The operation cansimply be displaying a message, flashing a signal or turning on aheater.

In one embodiment, the position-sensing device does not include akeyboard or display. This facilitates the position-sensing device inbeing compact in size and inexpensive. In addition, in anotherembodiment, a number of components of the position-sensing device'scircuitry can be integrated together. For example, the components can beincorporated on two semiconductor chips, one substantially forradio-frequency circuits and the other for low-frequency basebandprocessing circuits. With the advantageous size and cost benefits, theposition-sensing devices can be conveniently included into packages forshipment to track the packages, or can be attached to a person formonitoring purposes.

In one approach, an auxiliary sensor can be integrated into theposition-sensing device, and the fabrication process can includemicromachining techniques.

Other aspects and advantages of the present invention will becomeapparent from the following detailed description, which, when taken inconjunction with the accompanying drawings, illustrates by way ofexample the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows one embodiment of the present invention.

FIG. 2 shows a number of embodiments for the position-computing deviceof the present invention.

FIG. 3 shows examples of connections made by the position-computingdevice of the present invention.

FIG. 4 shows examples of auxiliary sensors of the present invention.

FIG. 5 shows examples of information provided by the remote site of thepresent invention.

FIG. 6 shows examples of actions performed by an actuator of the presentinvention.

FIG. 7 shows one embodiment of the position-sensing device of thepresent invention.

FIG. 8 shows one embodiment of the position-sensing device of thepresent invention having a high-frequency and a low-frequency circuit.

FIG. 9 shows examples of component sharing in the high-frequency sectionof the position-sensing device of the present invention.

FIG. 10 illustrates one example of a high-frequency circuit of theposition-sensing device of the present invention.

FIG. 11 shows examples of component sharing in the low-frequency circuitof the present invention.

FIG. 12A shows one embodiment of low-frequency circuit of theposition-sensing device of the present invention.

FIG. 12B shows examples of integrating a position-sensing device withdifferent types of auxiliary sensors.

FIG. 13 shows examples of the position-sensing device form factor of thepresent invention.

FIG. 14 shows examples of fabrication techniques for the presentinvention.

FIG. 15 shows an example of a micromachined accelerometer for thepresent invention.

FIG. 16 shows examples of applications for the present invention.

FIG. 17 is a block diagram of a mobile device according to oneembodiment of the invention.

FIG. 18 shows a number of structural issues regarding the devices forthe present invention.

FIG. 19 shows one embodiment of the invention that includes two modes oftransmissions.

Same numerals in FIGS. 1-19 are assigned to similar elements in all thefigures. Embodiments of the invention are discussed below with referenceto FIGS. 1-19. However, those skilled in the art will readily appreciatethat the detailed description given herein with respect to these figuresis for explanatory purposes as the invention extends beyond theselimited embodiments.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a position-sensing device 102 according to one embodimentof the invention. The position-sensing device 102 can be coupled to aposition-computing device 110, which, in turn, can be coupled to anauxiliary sensor 108, a remote site 104, and an actuator 106. Theposition-sensing device 102 can be based on global positioning system(GPS) technology, and can be compact and inexpensive. In oneimplementation, in a general sense, the position-sensing device 102 onlyhas to track the GPS satellites and send raw position data to theposition-computing device 110 where position computation can beperformed. The position-sensing device 102 can be very portable. Forexample, one can easily affix the position-sensing device 102 to aperson, package or other object. As another example, theposition-sensing device 102 can be temporarily placed within a vehicleand easily carried from one vehicle to another.

In one approach, the position-computing device 110 receives and convertsthe raw position data from the position-sensing device 102 into theposition of the position-sensing device. In another approach, theposition-computing device 110 can receive the raw position data from theposition-sensing device 102 and then forward the raw position data (or apartially processed version thereof) to a remote computing device (e.g.,remote server) for additional processing.

In one embodiment, a position sensor as used herein refers to a system,apparatus or device that includes not only a position-sensing device butalso a position-computing device. For example, with respect to FIG. 1,the position-sensing device 102 and the position-computing device 110can together be referred to as a position sensor.

FIG. 2 shows a number of embodiments for the position-computing device110. The position-computing device 110 can be a personal digitalassistant (PDA) 112, a personal computer (PC) 114, a cell phone 116, apager 118, or other types of electronic device typically withcomputation and signal transceiving capabilities.

In one embodiment, the position-sensing device 102 does not have anyuser input/output interface other than a link (e.g., wireless link) tothe position-computing device 110. With such an embodiment, theposition-sensing device 102 can be made particularly small and low cost.The position-computing device 110, which can be a portable device, canprovide user-interface functionality. For example, theposition-computing device 110 can include a keyboard, a touch-pad or astylus for information entry. The output of the position-computingdevice 110 can be text, audio or graphical. When the position-computingdevice 110 has a display screen, then text or graphics can be displayedon the display screen. As an example of a graphics output, theposition-computing device 110 can display a moving map on the displayscreen. In the case of an audio output, the position-computing device110 can, for example, output voice instructions pertaining to positions.In one embodiment, the computation capabilities of theposition-computing device 110 are also applicable for otherapplications. For example, when the position-computing device 110 isimplemented by a PDA 112, the PDA 112 can operate to perform processingfor calendars, appointments, address books, phone books, or otherapplication provided by the PDA 112.

FIG. 3 shows examples of connections that can be made by theposition-computing device 110. Locally, the position-computing device110 can be coupled to a position-sensing device 102. In one embodiment,the communication between the position-sensing device 102 and theposition-computing device 110 can, for example, be via a Bluetoothnetwork or a wireless LAN (e.g., Wi-Fi, 802.11a or 802.11b). In such anembodiment, the position-computing device 110 can be placed anywherewithin the signal reception range of the wireless link from theposition-sensing device 102. For instance, the position-computing device110 can be placed in the shirt pocket of a driver, and theposition-sensing device can be on the dashboard of the car. In any case,since the position-computing device 110 and the position-sensing device102 do not have to be physically tied together via a cable, a userenjoys greater freedom in the placement of the position-sensing device102 and the position-computing device 110. In yet another embodiment,the communication between the position-sensing device 102 and theposition-computing device 110 can be through a serial connection (e.g.,USB or FIREWIRE link).

The position-computing device 110 can also be wirelessly coupled to ahead set 150 having a speaker and a microphone. Again, as an example,the wireless coupling between the position-computing device 110 and theheat set 150 can be via the Bluetooth or Wi-Fi protocols.

In one embodiment, a user wearing the headset 150 can receive voiceinstructions via the wireless link between the position-computing device110 and the headset 150. In addition to receiving the voice instructions(e.g., voice directions), the user can also issue voice commands to theposition-computing device 110 via the microphone of the head set 150.Alternatively, the headset 150 can couple to the position-computingdevice 110 via a wired link (e.g., cable).

The position-computing device 110 can be locally coupled to one or moreof the auxiliary sensors 108. FIG. 4 shows examples of auxiliary sensors108. The auxiliary sensors 108 capture or acquire auxiliary information,and then can wirelessly transmit such information to theposition-computing device 110. In one embodiment, an auxiliary sensor isnot a position-sensing device.

The auxiliary sensor 108 can be an environment sensor, capturinginformation regarding the environment where the position-sensing device102 is located. For example, the auxiliary sensor 108 can be a sensorfor temperature, humidity, wind speed, chemicals, particle, liquid,radiation, sound/acoustic, metal or pressure. When the auxiliary sensor108 is a chemical sensor, the sensor can, for example, sense oxygenlevel or carbon monoxide level. Similar to a chemical sensor, theauxiliary sensor 108 can be an odor sensor. When the auxiliary sensor108 is a particle sensor, the sensor can, for example, be a smokedetector. When the auxiliary sensor 108 is a radiation detector, thesensor can, for example, be a light sensor or an infrared detector. Whenthe auxiliary sensor 108 is a pressure sensor, the sensor can, forexample, sense atmospheric pressure or device (e.g., tire) pressure.

The auxiliary sensor 108 can also capture information pertaining to theposition-sensing device 102. In other words, the auxiliary sensor 108can sense information pertaining to the position-sensing device 102itself, such as its motion or pressure asserted on it. The informationrelated to the motion of the position-sensing device 102 can be itsspeed, direction of travel, acceleration, shock, or vibration. Regardingpressure, the auxiliary sensor 108 can sense the force or pressureasserted on the position-sensing device 102.

In one embodiment, the auxiliary sensor 108 can be part of theposition-sensing device 102 and sense information regarding a livingbeing (e.g., a person). The position-sensing device 102 may be attachedto the being or be in close proximity to the being. The informationsensed by the auxiliary sensor 108 can include the being's vitalparameters. For example, the auxiliary sensor 108 can measure thebeing's body temperature, blood attributes, spirometry, heartconditions, brain wave, sound/acoustic waves, or body fat. The bloodattributes can include blood pressure, blood sugar or glucose level, orblood oxygen. Heart conditions can include ECG, heart rate, orarrhythmias. Sound/acoustic waves can be those measurable by astethoscope or an ultrasound scanner. The auxiliary sensors 108 can benon-invasive or invasive. The auxiliary sensors 108 can be in vitro orin vivo.

Still further, the auxiliary sensors 108 can also pertain to sensors forcolor, pattern, or touch (tactile).

In one embodiment, the position-computing device 110 can be coupled to aremote site 156, and can transmit the position-sensing device's positionand/or auxiliary information to the remote site 156 for additionalanalysis. The coupling can be through a local area network, or a widearea or global network. The wide area or global network can be a SMSnetwork. The remote site 156 can interface with users through a website.The additional analysis performed by the remote site 156 can include anumber of operations, such as labeling the positions of theposition-sensing device 102, enhancing the accuracy of the labels and/orpositions, or compressing the position and/or auxiliary informationreceived, as, for example, described in U.S. Provisional PatentApplication No. 60/404,645, filed Aug. 19, 2002.

The remote site 104 can also provide information to theposition-computing device 110. FIG. 5 shows examples of informationprovided by the remote site 104. For example, the remote site 104 canprovide information regarding the environment of the position-computingdevice 110, such as information on a destination entered by the userinto the position-computing device 110. The destination can be a pointof interest. As the user is traveling towards the destination, since theremote site 104 can be made aware of the position of theposition-sensing device 102, route information can also be provided tothe position-computing device 110. Route information can, for example,depend on pre-programmed maps or include current traffic conditions. Forexample, an accident has just occurred on the freeway and traffic isheld up. Such information can be transmitted to the user. In oneembodiment, the remote site 104 can send emergency conditions to theposition-computing device 110. For example, any emergency conditions,such as fire, flood and explosion, within a five-mile radius from aposition-sensing device will be sent to its correspondingposition-computing device 110.

The remote site 104 can provide information regarding a user to theposition-computing device 110. The information can be personal to theuser of the position-computing device 110. In one example, theinformation provided by the remote site 104 can be medical in nature.For example, the user's heart beat is irregular and there is a hospitalclose to where the current position of the user. The remote site 104 cansuggest that the user visit the hospital, and provide the user with thecorresponding directions. The hospital can also be notified of theimminent arrival and/or condition of the user by the remote site 104 orthe position-computing device 110.

In one embodiment, the position-computing device 110 is also coupled tothe actuator 106. In view of an analysis performed by theposition-computing device 110 and/or the remote site 104, the actuator106 can be controlled to perform an action. FIG. 6 shows examples ofactions performed by the actuator 106. In one embodiment, the action isa message to a user of the position-computing device 110 or to anotherperson. The message can include text, audio or graphics. The message candescribe certain actions the recipient should perform. The message mightsimply be an alarm, which can be a flashing red light or an audibletone. The action performed by the actuator 106 can also be a message fora different system. Based on the message, the different system caninitiate an action.

In another embodiment, the action performed by the actuator 106 can bean action directly on a user. For example, in view of auxiliaryinformation regarding the user's glucose level, the actuator 106 caninject small doses of insulin into the user's blood stream.

In still another embodiment, the action performed by the actuator 106 isan action on the environment or the surroundings in the vicinity of theposition-sensing device 102. For example, the action can be increasingthe power to a heater to increase temperature, or to speed up a fan todecrease temperature.

Auxiliary sensors and actuators can work in a closed-loop situation soas to reach a pre-set point. For example, as a temperature sensormonitors the temperature of an environment, an actuator adjusts thespeed of a fan or the power to an air-conditioner until a certainoptimal or pre-set temperature is reached.

FIG. 7 shows a position-sensing device according to one embodiment ofthe invention. The position-sensing device shown in FIG. 7 is suitablefor use as the position-sensing device 102 shown in FIG. 1. Theposition-sensing device includes an antenna 200, a down converter 202, aposition baseband circuit 204, a communication baseband circuit 206, andan up converter 208. The up converter 208 may also serve as a downconverter in another embodiment. Under that situation, the up converter208 can be known as an up/down converter. The following description isdirected towards an embodiment that makes use of GPS to sense position,but it should be understood that the position-sensing device could useother technologies besides GPS.

In one embodiment, the antenna 200 receives GPS RF signals and can alsoreceive and transmit communication RF signals. After GPS RF signals arecaptured, the down converter 202 down-converts such signals receivedfrom the antenna 200 to lower frequency signals or baseband signals forfurther processing.

The position baseband circuit 204 extracts raw position data from theGPS baseband signals. The raw position data are related to thepseudo-ranges from GPS satellites. Typically, a GPS baseband processoruses a digital signal processor core, which controls a set of GPScorrelators. These correlators are usually set up to acquire and trackthe GPS satellite signals so as to produce the raw position data.

In one embodiment, raw position data are pseudo-ranges. Pseudo-rangesare typically estimates of distances between position-sensing devicesand GPS satellites. In another embodiment, raw position data are fromsignals captured by the position-sensing device, but are less processedthan pseudo-ranges. For example, as the GPS signals are received fromthe satellites, the position-sensing device does not perform thetracking calculations needed to maintain a closed tracking loop.Instead, the tracking calculations are performed by theposition-computing device to generate, for example, pseudo-ranges, whichare then used to generate a position. In this example, raw position datasent to the position-computing device are less processed thanpseudo-ranges. The position generated can be, for example, the longitudeand latitude of the position. In yet another embodiment, raw positiondata are information that needs additional processing before theircorresponding position, such as its longitude and latitude, can beidentified.

In one embodiment, the position-sensing device does not convert the rawposition data to identify the position of the position-sensing device.Instead, the raw position data are sent to the position-computing device110, which will then compute a position based on these data. In anotherembodiment, these raw position data can be sent, via cellular link, toremote servers for position calculations. In either case, theposition-sensing device does not have to perform the intensive positioncomputations requiring processing capability from additional circuitryand consuming more power.

In one embodiment, to minimize space, and to reduce power consumptionunder certain circumstances, many components shown in FIG. 7 in theposition-sensing device are integrated into a high-frequency circuit anda low-frequency circuit (FIG. 8). Sometimes, the high-frequency circuitcan be called the analog circuit, while the low-frequency circuit, thedigital circuit. For example, the GPS down converting and thecommunication up/down converting functions are integrated into thehigh-frequency circuit; and the position baseband circuit and thecommunication baseband circuit are integrated into the low-frequencycircuit. The high-frequency circuit can be on a chip or substrate, andthe low-frequency circuit can be on another chip. This results in atwo-chip solution for a position-sensing device. In yet anotherembodiment, all these circuits could be on a common chip wherehigh-speed analog circuits and digital circuits operate satisfactorilyon the same substrate. If the antenna is an integrated-circuit antenna,to reduce loss, the antenna may not be on the same substrate as theother circuits, but can be on a separate low-loss material. In anotherembodiment, a chip or a substrate can be a circuit board instead.

Certain components in the high-frequency section of the position-sensingdevice can be shared. FIG. 9 shows examples of such sharing. Both theGPS RF signals and the communication RF signals can share the samephysical antenna 200. In one embodiment, the antenna 200 can be a patchantenna 250. Both the GPS RF signals and the communication RF signalscan also share the same frequency synthesizer 252, locked to a commontimebase such as a crystal oscillator.

FIG. 10 shows one embodiment of the high-frequency circuit, using GPSand Bluetooth to illustrate different features. First, regarding thesignal path of the GPS signals, an antenna receives the GPS RF signals,which are then amplified by a low-noise amplifier (LNA). The subsequentRF signals are down-converted to lower or baseband frequencies. This canbe done by a mixer that mixes the RF signals with a LO signal from afrequency synthesizer. The mixer can be an image-reject mixer. Thefrequency synthesizer can be controlled by a temperature-compensatedvoltage-controlled external oscillator or timebase, which can be acrystal oscillator. The mixer output typically includes two signals, Iand Q signals, which are in phase quadrature with each other. Bothsignals are amplified and then sent to a GPS baseband processor.

For the Bluetooth signals to be transmitted by the position-sensingdevice to the position-computing device, a mixer receives the I and Qsignals from a Bluetooth baseband processor. The mixer, serving as an upconverter, converts the two sets of signals to RF signals by mixing themwith a LO signal from the frequency synthesizer. The communication RFsignals are then amplified by a power amplifier to generate theBluetooth RF output signals. The antenna then transmits the RF outputsignals to the position-computing device.

The position-computing device can also send Bluetooth RF input signalsto the position-sensing device. This can be, for example, controlsignals for power conservation, configuration or other functions. Otherfunctions can include initiating an action of accessing raw positiondata, or transmitting data to the position-computing device. As shown inFIG. 10, the Bluetooth RF input signals can go through similar signalprocessing as the GPS RF signals, but the I and Q signals aretransmitted to the Bluetooth baseband processor. In this case, the mixeralong the signal processing path can serve as a down converter.

A number of components are not shown in FIG. 10. For example, a modeswitching circuitry with 3-wire bus input can be used to control thedifferent modes of operation. In addition, there can be on-chipdiplexers to control signal traffic for the different modes. There maybe other passive components like filters for processing the RF andbaseband signals.

Similar to the high-frequency circuit, certain components in thelow-frequency circuit can be shared. FIG. 11 shows examples of suchsharing. The communication signals and the GPS signals may share thesame controller. An auxiliary sensor or an actuator can also share acontroller.

FIG. 12A shows one embodiment of the low-frequency circuit, again usingGPS and Bluetooth to illustrate different features. The GPS basebandprocessor receives and analyzes the GPS quadrature data, the I and Qsignals. The GPS baseband processor is controlled by a controller withon-chip memory.

The Bluetooth baseband processor receives and analyzes the Bluetoothquadrature data from the Bluetooth RF input signals. The Bluetoothbaseband processor is also responsible for generating the Bluetoothquadrature data, the I and Q signals, for the Bluetooth RF outputsignals. The Bluetooth baseband processor is controlled by thecontroller. The controller can have a separate and dedicatedcommunication processor. In such a case, the logic circuitry of thecontroller will be simplified.

The controller can also be used to control one or more auxiliary sensorsand/or one or more actuators. These auxiliary sensors and/or actuatorscan be integrated to the circuits of the position-sensing device, suchas the low-frequency circuit, or can be on separate circuits/chips, orcan be external to the device.

FIG. 12B shows examples of integrating a position-sensing device withone or more different types of auxiliary sensors. Other types ofauxiliary sensors can be integrated. FIG. 12B provides examples forillustration purposes. The device can be integrated to a temperaturesensor, a pressure sensor, an accelerometer, a humidity sensor and awind speed sensor. The integration can be through integrated-circuittechniques, such as having one or more of auxiliary sensors on the sameintegrated circuit as the position-sensing device. Or, the integrationcan be through packaging, where one or more auxiliary sensors are in thesame package as the position-sensing device.

An example of a temperature sensor is a magnetoelastic thin-film strip.The material's magnetic response changes when it is heated or cooled. Amagnetoelastic thin-film strip can also be used as a stress sensor,again through monitoring its magnetic response. Such a strip can be, forexample, one inch in length.

In another embodiment, two or more different types of auxiliary sensorsare integrated together, without a position-sensing device.

The position-sensing device can be made relatively compact, enhancedthrough circuit integration. FIG. 13 shows examples of theposition-sensing device form factor. The position-sensing device can bethe size of a patch or a card (e.g., memory card or PC Card). Theantenna can be a patch antenna. A patch can be a structure whosethickness is less than 0.5 inch and whose surface area is less than 2square inches, or more preferably 1 square inch. In this situation,power can be from a dc power supply or a battery (e.g., coin battery).The dc power supply can be from the cigarette lighter outlet of a car orfrom an ac outlet with an external transformer. Certain featuresdescribed in U.S. Provisional Patent Application No. 60/404,645, filedAug. 19, 2002 can be incorporated into the position-sensing device toreduce power consumption.

In another embodiment, the size of the position-sensing device isthicker, more in the shape of a block. In this situation, the size isinfluenced by the size of its power source. For example, power can befrom a rechargeable battery or from AA batteries.

Different techniques may be used to fabricate different circuitsdescribed. FIG. 14 shows a few examples. The high-frequency circuit canbe fabricated by bipolar processes, while the low-frequency circuit byCMOS processes. In one example, both the high and low frequency circuitsare fabricated by CMOS processes. Other processing technologies can beused, such as BiCMOS, SiGe or SOI (Silicon-On-Insulator).

In one approach, an auxiliary sensor includes a mechanical device thatcan respond to mechanical forces. It can be fabricated by micromachiningtechniques. Devices made by micromachining techniques can also be knownas microelectromechanical systems or microsystems. The micromachiningtechniques include semiconductor processes. The auxiliary sensor can beintegrated with the position-sensing device, such as on thelow-frequency chip.

An example of an auxiliary sensor made by micromachining techniques is apressure sensor. It can include a square membrane bulk-etched in asilicon wafer. This process etches away most of the thickness of aregion of the die, called the diaphragm. Then piezoresistive (stresssensing) transducers can be deposited through diffusion to create aresistive bridge type structure. The etching process used to create thethin diaphragm can make the silicon wafer more fragile and susceptibleto breakage during handling. To reduce in-process damage, the etchprocess can be performed as the last major photolithography step. Thesensor can then be separated from the wafer, and bonded to a glass orPyrex plate, or to a ceramics plate to increase its mechanical strength.

Another example of such an auxiliary sensor made by micromachiningtechniques is a capacitive accelerometer or inertia sensing element. Itcan be a bulk micromachined capacitive accelerometer on a substrate.FIG. 15 shows an example. The accelerometer 300 incorporates a movinginertial mass 302 suspended by springs attached to a surrounding framestructure, which can be the substrate. There can be two springs 304 and306, one connected to each end of the moving inertial mass. Each springcan be micromachined beams in the shape of a rectangular box, with twolong beams connected at their ends. One of the long beam 308 of thespring 304 is stationary and is attached to the frame structure. Theother long beam 310 is a movable or flexible beam. That long beam 310 isconnected to one end of the inertial mass 302, whose other end isconnected to the long beam 312 that is movable and flexible, of theother spring 306. Again, the other long beam of the spring 306 isstationary and is attached to the frame structure.

The inertial mass 302 has a metallic finger 314. The finger 314 ispositioned between two stationary metal bars, 316 and 318, on the framestructure. The distance between the finger 314 and each of the metal barchanges as the inertial mass 302 moves. This creates a variablecapacitance between the moving inertial mass and each of the metal bars.There can be many fingers, each positioned between two bars, so as tohave higher capacitance. To measure two axes of acceleration, two suchaccelerometers, positioned orthogonal to each other, can be used.

Yet another example of an auxiliary sensor made by micromachiningtechniques is for measuring information regarding a living being. In oneembodiment, sensors made by such techniques can take very small amountof materials from the being as samples for measurement.

The auxiliary sensor may not have to include a mechanical device. Forease of integration, such auxiliary sensors can be fabricated bysemiconductor processing techniques similar to those used in theposition-sensing device. For example, the auxiliary sensor is atemperature sensor implemented with a diode. The diode can be fabricatedon the same piece of substrate as the low-frequency circuit of theposition-sensing device. Assume the circuits of the device are in anenclosure. The temperature gradient between the inside of the enclosureand the outside ambient of the position-sensing device can be calculatedor measured. The temperature as measured by the diode on the substratecan be calibrated to subtract out the gradient. This will moreaccurately reflect the outside ambient temperature. In one embodiment,the temperature sensor is implemented with a thermal couple.

The auxiliary sensor can be in the same package as the position-sensingdevice but not share the same substrates as the circuits in theposition-sensing device. For example, the temperature sensing diode canbe separately encapsulated or enclosed, with the enclosed diode exposedto the outside environment, and with its leads bonded to circuitry inthe position-sensing device. As another example, the geometry of theauxiliary sensor can be much bigger than the numerous circuit componentsof the position-sensing device. To illustrate, the diaphragm in amicromachined pressure sensor can occupy significant area. This area canbe quite expansive if it is on the substrate of the low frequencycircuit of the device. Hence, the auxiliary sensor can be on a separatesubstrate or circuit board.

In one embodiment, different chips or circuit boards described arestacked, one on top of the other, instead of having one substantially onthe same plane as the other.

In yet another embodiment, an actuator also includes a mechanical devicethat can exert mechanical forces, and is fabricated by micromachiningtechniques. For example, the micromachined actuator is for administeringsmall doses of insulin into a person's blood stream.

In one embodiment, some of the high-frequency components in the deviceare also fabricated by micromachining techniques.

In one approach, the micromachining process is a bipolar process. Inanother, it is a CMOS process. In yet another approach, it is a BiCMOSprocess.

In one embodiment, a position sensing system can include more than onetype of position detection mechanisms. Such a system can be known as amulti-type position sensor. For example, two types of position detectionmechanisms can be a GPS sensor and a RF ID tag. In one embodiment, theRF ID tag can be integrated with circuitry of the GPS sensor. In anotherembodiment, the GPS sensor and the RF ID tag are on separate substratesor circuit boards, or in separate enclosures. In yet another embodiment,the RF ID tag is on a plastic substrate. The GPS sensor can provide morecoarse position information, while the RF ID tag provides finer positioninformation. In another example, the GPS sensor can provide positioninformation in an outdoor environment, while the RF ID tag can providefor position information in an indoor environment, such as a largewarehouse. The multi-type position sensor can include a position-sensorselector. When the multi-type position sensor is in transit from onewarehouse to another, the selector activates the GPS sensor to trackposition. When the multi-type position sensor is moved into a warehouse,the selector would select the RF ID tag to take over theposition-sensing responsibility. As another example, two types ofposition detection mechanisms can be a GPS sensor and a local wirelessnetwork sensor (e.g., Bluetooth or Wi-Fi transceiver). In oneembodiment, a multi-type position sensor, or at least the GPS sensorwithin the multi-type position sensor, extracts raw position data, butdoes not convert the raw position data into the position of themulti-type position sensor.

FIG. 16 shows a few examples of applications for the present invention.One application is in navigation. The position-sensing device can beattached to the top of the dashboard or to the rear window of a car. Theposition-computing device can be a PDA next to the driver or in thedriver's pocket. The PDA can contain a navigation program that performsroute calculations, based on user input (e.g., a destination location),with a map database stored in the PDA's memory. The map may bedownloaded from a remote site. The downloading can be performed beforeor after the destination position has been entered into the PDA. Thenavigation program allows the driver or a passenger to enter adestination position, e.g., in the format of a street address or a pointon a map display. The program then can compute a route based on the mapdatabase to guide the driver to that destination. Such guidance can bein the form of turn-by-turn voice instructions. As an example, a carrental company can incorporate such technologies into its car rentalpolicy and offer them as an additional feature.

Another application is in the area of asset tracking and management. Acost-effective asset tracking system can be built based on a number ofembodiments described. For example, a position sensor can include alow-cost GPS position-sensing device and a position-computing device(e.g., PDA with cellular or other wireless communication ability). Theposition-computing device can also be wirelessly connected to a remotestation or site.

In one embodiment, products/materials can be tracked by a positionsensing system. This can be used in supply-chain management. When aproduct requires multiple parts/materials to be assembled or integratedtogether, to have each of the right parts/materials available at theappropriate time is sometimes critical to success. To reduce totalcosts, a company has to control the amount of materials/parts at rest(inventory) and the speed and costs of materials/parts in motion(freight). If different parts/materials come from different channelpartners, to control cost, the company may want to work with theirpartners to keep their assets (the parts/materials) moving to thecompany at the minimum level needed to keep customers satisfied. Toachieve that, the company should know where the differentparts/materials are and to control the rate they are transported. Notonly would this help the company lower its expense by reducing itsinventory, the company can better satisfy its customers with sufficientinventory.

A piece of inventory can be in freight or it can be in a largewarehouse. Sometimes, the piece of inventory has to be tracked in bothsituations. In one embodiment, the position sensing system can includetwo types of position sensors—a multi-type-position sensor. One positionsensor (a GPS sensor) is for sensing the inventory when it is beingtransported from an airport to a warehouse, and the other (such as a RFID tag or a bar code) for sensing its location inside the warehouse. Inanother embodiment, a piece of large inventory can include manysub-pieces. The piece of inventory can be tracked by a GPS sensor, andmay also be tracked by a RF ID tag. Once inside the warehouse, the pieceof inventory can be transported to a center, where it is unpacked, witha number of the sub-pieces separately distributed through the warehouse.Each sub-piece can be identified and tracked within the warehouse by itsindividual bar-code or RF ID tag.

The inventory location information can be wirelessly entered into awarehouse management system, which allows users to see the status ofincoming goods, outgoing shipments, and available inventory. Reports canalso be generated. The warehouse management system can allow theinventory to be managed in real time. Such information is useful forprocuring, maintaining, transporting and delivering products throughevery stage of production from the source of supply to the final pointof consumption. Such information could also assist in providing an audittrail for accounting purposes.

The above embodiments describe tracking inventories, such as, by themanagement. However, a consumer can track a piece of inventory as well.A typical supply chain includes four entities—manufacturer, wholesaler,retailer and consumer. In one embodiment, a consumer can drive what amanufacturer should produce and ship. For example, the consumer can getin touch with the call center of the retailer, or enters his requestinto the retailer's web site. Such a request can directly go to themanufacturer, which would assemble the product to be shipped to theconsumer. Based on a number of the embodiments of the present invention,the consumer can track the location of his request in real time, such asthrough a web site. Thus, the consumer directly drives what should beproduced and shipped, and tracks his shipment, from inside a warehouseto his door step.

Another example of involving a consumer is for products at leastpartially assembled by the consumer. A retailer can have thousands ofcomponents in the store. It is up to the consumer to pick and choose thecomponents desired for subsequent integration. If the consumer selectstwo components, manufactured by two different manufacturers. Theretailer can place the order to the two manufacturers. One goal of theretailer may be to ensure that both components arrive around the sametime at the retailer's store. The two components can be ready forshipment at different time. Or, the two components can arrive atdifferent time frames, even if they are shipped at the same time. Thiscan be due to differences in locations or differences in deliverymethod. One approach to achieve the retailer's goal is to allow thecomponent that needs more time (long-time component) before reaching theretailer dictate the delivery of the other component. For example, whenthe manufacturer of the long-time component is ready to ship itscomponent, that component is shipped, with its position tracked by anembodiment of the present invention. Only when the long-time componentis within a certain distance to the retailer, the retailer initiates thedelivery of the other component. In other words, the retailer (or thesystem automatically) changes the delivery time of the other componentbased on the position of the long-time component. When both componentsarrive, the retailer/system can notify the consumer.

In tracking assets, a position sensor can include additional auxiliarysensors, such as temperature and humidity sensors. The followingillustrates an example of asset tracking based on a position sensor andan auxiliary temperature sensor. Assume that a company needs to producea product that requires two very expensive parts to be integratedtogether at a warehouse. One part is manufactured by a localsub-contractor. The other part is from a remote sub-contractor thousandsof miles away. This other part is also temperature sensitive. Due tocost and liability, the company does not want to order and store any oneof the two parts in the warehouse unless the product has to be produced.Assume an order is received for the product. The company has asupply-chain management controller, which can include a warehousemanagement system. The controller automatically requests thesub-contractors to make and ship the parts so that the company canproduce the ordered product as needed.

Assume the temperature-sensing part is ready and is shipped first. Onceshipped, the controller tracks the temperature-sensitive part in motionbased on a position sensor. The controller is also aware of thetemperature of the ambient surrounding that part based on an auxiliarysensor. Assume the temperature-sensitive part becomes defective duringshipment due to accidental temperature rise, even though the part isstill thousands of miles away from the company. Since the temperaturesensor sends information to the controller, the controller is aware thatthe temperature-sensitive part has to be replaced. Based on suchinformation, the controller automatically orders the localsub-contractor to hold delivery of its part, until the remotesub-contractor is ready to ship a new temperature-sensitive part to thecompany.

Such real-time location and/or auxiliary information notification andcontrol are very helpful for a company to manage its inventory. Suchinformation is not only applicable to asset tracking/management, supplychain management or product management, but also can be applied toenterprise resource planning and customer relationship management. Forexample, in customer relationship management, a call center supportstaff can inform a customer of the location and condition of herproduct. Alternatively, a customer can access real-time information(e.g., location and condition) via a web interface or by receivingnotifications (e.g., email notifications).

Personnel tracking can be another application. For example, additionalauxiliary sensors such as body temperature or blood oxygen sensors, orheart-beat monitors can provide important physical health parameters tointerested persons (e.g., health professionals) wishing to monitor theposition and well-being of their clients. Personnel tracking can alsoinclude tracking of other forms of living beings, such as animals.

Different examples of sensors have been described. In one embodiment, asensor not only can sense but can also transmit information regarding anobject. For example, the sensor is a RF ID tag with information storedin the tag about an object. The tag can transmit such information to arecipient.

In a number of embodiments, not only can the size of theposition-sensing device be made compact, the position-sensing device canbe relatively inexpensive. For example, to reduce cost and size, theposition-sensing device does not have a display or keyboard entry foruser input. Information can be received and transmitted wirelessly.Also, the position-sensing device does not have to include circuitry toperform processing to calculate its position or determine actions.

A number of devices have been described where the position-sensingdevice is separated spatially from the position-computing device.Alternatively, the position-sensing device and the position-computingdevice are in one package.

A number of embodiments have been described that include aposition-computing device. One embodiment does not include aposition-computing device. Instead, its function is performed by aremote site. The corresponding position-sensing device directlycommunicates with and is controlled by the site. In this embodiment,auxiliary sensors and/or actuators can also communicate with and becontrolled by the site. As an alternative embodiment, theposition-sensing device can collect information from, and distributeinformation to, the additional auxiliary sensors and/or actuators. Inother words, the position-sensing device communicates with the site onbehalf of the auxiliary sensors and/or actuators.

FIG. 17 is a block diagram of a mobile device 400 according to oneembodiment of the invention. The mobile device 400 is suitable for useas a position sensing system, a medical monitoring device, a positiontracking device, or other positioning device.

The mobile device 400 includes a controller 402 that controls overalloperation of the mobile device 400. A data store 404 is connected to thecontroller 402 and provides storage of data. The data stored in the datastore 404 can include program data 406, configuration data 408, andstatus data 410. The status data 410 are data related to the status ofan object being monitored, such as position information and/or auxiliaryinformation of the object. The status data 410 are acquired by one ormore auxiliary sensors. A status manager 412 couples to the one or moreauxiliary sensors 414. The controller 402 interacts with the statusmanager 412 to obtain the status data 410.

In addition, the controller 402 couples to a position module 416 and acommunication module 418. The position module 416 can receive signalsthat are used to determine a position of the mobile device 400. In oneembodiment, the position module 416 is a GPS receiver. The communicationmodule 418 allows the mobile device 400 to communicate in a wirelessmanner. The wireless communications are over a wireless network (e.g.,SMC network, a cellular network, a Bluetooth network, a Wi-Fi network,etc.). The wireless communication capabilities can be used tocommunicate with a remote server (e.g., send status data to the remoteserver), sending or receiving messages (e.g., notifications) to othermobile devices, or as an alternative or additional means of determiningposition.

The mobile device 400 can also include an actuator manager 420 thatcouples to one or more actuators 422. The actuators 422 can becontrolled by the actuator manager 420 to perform an action. Thecontroller 402 interacts with the actuator manager 420 to direct any ofthe actuators 422 to perform an action. FIG. 6 shows examples of actionsthat could be performed by the actuators 420. For example, the action isa message to a user of the mobile device 400, another person, adifferent system, or an action on a user.

The mobile device 400 further includes a battery 424 that supplies powerto the mobile device 400. The controller 402, or a power manager (notshown), can also perform power management functions to reduce powerconsumption and thus extend battery life. For example, circuits orcomponents can be power-off or placed in low-power mode when not active.Further, in one embodiment, the communication module 418 and theposition module 416 can share components to reduce cost, die areaconsumption and power consumption (see, e.g., FIGS. 7-12).

Although the mobile device 400 shown in FIG. 17 includes the statusmanager 412 and the actuator manager 420, such managers are not requiredas their operations can be performed by the controller 402. However,when provided, managers can off-load processing from the controller 402to the managers which reduce processing load on the controller 402. Themobile device 400 can also facilitate power management by separatelycontrolling power to the controller 402 and any managers provided. Inaddition, the mobile device 400 need not include any of the actuators422.

As described, a number of embodiments of the present invention can bequite compact. FIG. 18 shows a number of structural issues 500 regardingthe devices for the present invention.

The circuits in a mobile device (e.g., a position sensing system, aposition sensing device, a medical monitoring device, or a positiontracking device) can be encapsulated or enclosed 502 in a number ofways. For example, the circuits can be in a case or housing. Thecircuits can be enclosed by a molding compound. The molding compound canbe epoxy, rubber, plastic or other materials. The enclosed circuits canbecome the housing of the device.

After the enclosing, the enclosed circuits of the mobile device can beattached 504 to an object (e.g., a package) or a being (e.g., a person)in a number of ways. For example, the enclosed circuits can be in amodule, with the module embedded as a unit into the object or being. Abeing can be a living being or a dead being, for example, a livingperson or a dead dog. The enclosed circuits can be attached (directly orindirectly) to the object or being through a clip and a pin. Theenclosed circuits can be referred to as being wearable. Other attachmenttechniques include Velcro® and adhesive, either permanently, such aswith a glue, or in a non-permanent manner, such as patches that areadhered to the body. The enclosed circuits can be attached with a band,such as an elastic band. The enclosed circuits can be attached by havinga ring or a hook. The enclosed circuits can be worn as a necklace,bracelet or other types of fashionable item.

The enclosed circuits can be attached by a mechanism that is designed tobe disposed or disposable. For example, the attachment can be through anadhesive tape that has an envelope or pocket. The enclosed circuits canbe provided in the envelope, and the envelope can be closed such as byVelcro® or adhesive. The tape can be attached to an object. Afterfinished using the circuits, a user can dispose of the tape, but keepthe enclosed circuits.

One embodiment of the invention includes a solar panel. The solar panelcan provide electrical power to, for example, a position-sensing device.The solar panel can thus charge a battery used to power the deviceand/or itself to power the device. When the device is affixed to anobject (e.g., a package), the solar panel can remain at least partiallyexposed to the outside of the object so as to be able to receive light.The solar panel can be integrated with the housing of the device or canbe separate and couple to the device via one or more wires (e.g., acable). For example, the battery 424 of the mobile device 400 can becharged by a solar panel.

In one embodiment, a user can set permission levels. These levels candetermine the identity of the person or system that can get informationfrom different embodiments of the present invention, such as aposition-computing device, a position-sensing device, a medicalmonitoring device, a mobile device and/or an auxiliary sensor. Thepermission levels can also include the time frame when a person orsystem can get the information. If the user desires, the user can eventurn the device off. In that situation, no one has the permission toaccess information. This can be done, for example, through enteringcommands into or programming a position-computing device, aposition-sensing device, a medical monitoring device, or a mobiledevice. In another embodiment, the permission can be set at a remotesite that communicates with a position-computing device, aposition-sensing device, a medical monitoring device or a mobile device.

In yet another embodiment, a position-sensing device or a positionsensor is not active until a battery is inserted or a switch is turnedon. The device might include a unique identifier, which can be a number.In another embodiment, the device is in a low power mode (e.g. sleepmode) but is programmed to wake up at certain times to listen forcommands directed to it. For example, a position-computing device cantransmit, through Bluetooth, to the device, a command and the uniqueidentifier, which is used to identify the recipient device of thecommands. Once the commands are received, the device becomes active.

In one embodiment, a position-sensing device includes two (2) modes oftransmissions 550, as illustrated in FIG. 19. Raw position data can betransmitted through either one of the two modes. One mode is short range552, and the other is long range 554. The short-range transmission is totransmit, such as through Bluetooth, to a receiver in close proximity.Such transmission can be to a position-computing device in its vicinity(e.g., within 30 feet). The other mode is much longer range, such as toa Wi-Fi, cellular, or a pager network. This longer-range transmissionconsumes more power than the short range transmission. The destinationfor the long range transmission can be to a remote server. In anotherembodiment, the short-range transmission can be through Wi-Fi also,while the long-range transmission can be to a cellular or pager network.

In normal operation, the device prefers to transmit and receive signalsusing short-range communication. In one embodiment, after theposition-sensing device has been activated, the position-sensing devicestarts in a short-range mode. If the position-sensing device is unableto communicate with a recipient or an intermediate system, theposition-sensing device can switch to a long-range mode. For example,when the position-sensing device fails to receive either a signalrequesting for position information or an acknowledgement to itstransmitted signals after a preset duration of time, theposition-sensing device will automatically switch to communicate in thelong range mode with a recipient (e.g., a remote server). Theposition-sensing device can then periodically transmit its location tothe remote server.

One application of the two modes of transmission is for theftprevention. Imagine a truck shipping a package that has aposition-sensing device. During shipment, the position sensing devicetransmits its position information through short-range communication toa position-computing device attached to the truck. Theposition-computing device transmits the position of the package to themain office of the trucking company. Unbeknown to the driver, when he ishaving lunch at a restaurant, a thief breaks into his truck and stealsthe package. For the next hour, the position-sensing device neverreceives a signal requesting for location information or anacknowledgement to its transmitted signals. After the hour has elapsed,the position-sensing device can automatically send its unique identifieras a status signal, through a wireless (e.g., cellular) network, to themain office of the trucking company. If the signal is not received, thedevice can resend the signal every fifteen minutes. The office, afterreceiving the status signal, can request for the location of the package(i.e., the position-sensing device). The position-sensing device,getting the request, can transmit its location information through thewireless means to the office. Alternatively, the status signal coulditself contain the location of the package. In either case, the officeis notified of the location and thus is able to track the position ofthe stolen package.

In another embodiment, instead of transmitting through cellular means,the device transmits information using a Wi-Fi signal to tap into aWi-Fi network. The Wi-Fi hub receiving the signal can direct it to apredetermined remote site, such as to the main office in the aboveexample. The transmission of information from/to the position-sensingdevice can also be in a text message format (e.g., email or instantmessage). For example, the information can be transmitted over a SMSnetwork or other pager type network.

A number of embodiments have been described where positions areidentified based on GPS technologies. Other wireless technologies arealso applicable, for example, using the techniques of triangulation. Inone embodiment, the wireless technologies are based on aposition-sensing device accessing or capturing television signals fromsuch as three TV signal transmission towers. Triangulation techniquesare then performed using synchronization codes in the TV signals toidentify the location of that position-sensing device. In embodimentswhere positions are identified not based on GPS technologies,pseudo-ranges can become estimates of distances between position-sensingdevices and locations whose known and well-defined co-ordinates can bebroadcasted and captured by the position-sensing devices.

The above-described systems, devices, methods and processes can be usedtogether with other aspects of a monitoring system, including thevarious aspects described in: (i) U.S. Provisional Patent ApplicationNo. 60/444,198, filed Jan. 30, 2003, and entitled “SYSTEM, METHOD ANDAPPARATUS FOR ACQUIRING, PRESENTING, MONITORING, DELIVERING, MANAGINGAND USING STATUS INFORMATION,” which is hereby incorporated herein byreference; (ii) U.S. Provisional Patent Application No. 60/418,491,filed Oct. 15, 2002, and entitled “SYSTEM, METHOD AND APPARATUS FORACQUIRING, PRESENTING, MONITORING, DELIVERING, MANAGING AND USING STATUSINFORMATION,” which is hereby incorporated herein by reference; (iii)U.S. Provisional Patent Application No. 60/404,645, filed Aug. 19, 2002,and entitled “SYSTEM, METHOD AND APPARATUS FOR ACQUIRING, PRESENTING,MONITORING, DELIVERING, MANAGING AND USING POSITION AND OTHERINFORMATION,” which is hereby incorporated herein by reference; and (iv)U.S. Provisional Patent Application No. 60/375,998, filed Apr. 24, 2002,and entitled “SYSTEM, METHOD AND APPARATUS FOR ACQUIRING, PRESENTING,MANAGING AND USING POSITION INFORMATION,” which is hereby incorporatedherein by reference.

The various embodiments, implementations, features and aspects of theinvention noted above (including those incorporated by reference) can becombined in various ways or used separately. Those skilled in the artwill understand from the description that the invention can be equallyapplied to or used in other various different settings with respect tovarious combinations, embodiments, implementations or features providedin the description herein.

The invention can be implemented in software, hardware or a combinationof hardware and software. The invention, or at least certain softwareportions of the invention, can also be embodied as computer readablecode on a computer readable medium. The computer readable medium is anydata storage device that can store data which can thereafter be read bya computer system. Examples of the computer readable medium includeread-only memory, random-access memory, CD-ROMs, magnetic tape, opticaldata storage devices, and carrier waves. The computer readable mediumcan also be distributed over network-coupled computer systems so thatthe computer readable code is stored and executed in a distributedfashion.

Other embodiments of the invention will be apparent to those skilled inthe art from a consideration of this specification or practice of theinvention disclosed herein. It is intended that the specification andexamples be considered as exemplary only, with the true scope and spiritof the invention being indicated by the following claims.

1. A position sensing system comprising: a GPS position-sensing device,wherein the position-sensing device includes: a position antennaconfigured to receive high-frequency signals; a down converter coupledto the position antenna and configured to convert the high-frequencysignals to low-frequency signals; a position baseband circuit coupled tothe down converter and configured to extract raw position data from thelow-frequency signals; and a communication baseband circuit coupled tothe position baseband circuit and configured to transmit the rawposition data to a portable position-computing device, which convertsthe raw position data into the location of the position-sensing device,wherein the raw position data is GPS information that needs additionalprocessing for identification of the data's corresponding position, andwherein the raw position data is processed by the portableposition-computing device into the location of the position-sensingdevice.
 2. A position sensing system as recited in claim 1 wherein theposition-computing device is a personal digital assistant.
 3. A positionsensing system as recited in claim 1 wherein the position-computingdevice is a pager.
 4. A position sensing system as recited in claim 1wherein the position-computing device is a cell phone.
 5. A positionsensing system as recited in claim 1, Wherein the position sensingdevice wirelessly transmits the raw position data to the portableposition-computing device, and wherein the position-computing devicereceives the transmitted raw position data through Bluetooth protocol.6. A position sensing system as recited in claim 1, Wherein the positionsensing device wirelessly transmits the raw position data to theportable position-computing device, and wherein the position-computingdevice receives the transmitted raw position data through Wi-Fiprotocol.
 7. A position sensing system as recited in claim 1 wherein theposition-computing device is wirelessly coupled to a headset to providevoice output to a user.
 8. A position sensing system as recited in claim1 further comprising an auxiliary sensor configured to sense auxiliaryinformation.
 9. A position sensing system as recited in claim 8 whereinthe auxiliary information is transmitted to the position-computingdevice.
 10. A position sensing system as recited in claim 9 wherein theposition-computing device analyzes the auxiliary information and thelocation of the position-sensing device to determine an action.
 11. Aposition sensing system as recited in claim 9 wherein theposition-computing device wirelessly transmits the auxiliary informationand the location of the position-sensing device to a remote site.
 12. Aposition sensing system as recited in claim 11 wherein the remote siteanalyzes the auxiliary information and the position-sensing devicelocation to determine an action.
 13. A position sensing system asrecited in claim 12 wherein, based on the analysis, a signal istransmitted to the position-computing device to perform the action. 14.A position sensing system as recited in claim 8 wherein the auxiliarysensor is configured to capture information related to the environmentwhere the position-sensing device is located.
 15. A position sensingsystem as recited in claim 8 wherein the auxiliary sensor is configuredto capture information pertaining to the position-sensing device.
 16. Aposition sensing system as recited in claim 8 wherein the auxiliarysensor is configured to capture information regarding a living beingassociated with the position-sensing device.
 17. A position sensingsystem as recited in claim 8 wherein at least a part of the circuitry ofthe auxiliary sensor is integrated with at least a part of the circuitryof the position-sensing device.
 18. A position sensing system as recitedin claim 1 wherein the position-computing device wirelessly transmitsthe location of the position-sensing device to a remote site.
 19. Aposition sensing system as recited in claim 18 wherein the remote sitetransmits a piece of information back to the position-computing devicebased on at least the location of the position-sensing device that wasreceived from the position-computing device.
 20. A position sensingsystem as recited in claim 18 wherein the remote site includes awebsite.
 21. A position sensing system as recited in claim 10 furthercomprising an actuator coupled to the position-computing device andconfigured to perform an action based on the analysis.
 22. A positionsensing system as recited in claim 12 further comprising an actuatorconfigured to perform an action based on the analysis.
 23. A positionsensing system as recited in claim 22 wherein the action performedincludes providing a message to a user.
 24. A position sensing system asrecited in claim 22 wherein the action performed includes providing amessage to a system.
 25. A position sensing system as recited in claim22 wherein the action performed includes an action directly on a user.26. A position sensing system as recited in claim 22 wherein the actionperformed includes an action on the environment of the position-sensingdevice.
 27. A position sensing system as recited in claim 22 wherein theaction is modified in view of subsequent auxiliary information from theauxiliary sensor.
 28. A mobile device for acquiring status informationpertaining to an object, said mobile device being proximate to theobject, said mobile device comprising: a wireless communication modulefor receiving or transmitting signals in a wireless manner; a GPSreceiver for receiving GPS data; at least one auxiliary sensor foracquiring auxiliary data; and a controller operatively connected to saidwireless communication module, said GPS receiver, and said at least oneauxiliary sensor; wherein said controller controls operation of saidmobile device including acquisition of the GPS data and the auxiliarydata, and causes said wireless communication module to at least transmitinformation related to the GPS data and information related to theauxiliary data to a remote server or another mobile device, wherein saidwireless communication module and said GPS receiver share at least aportion of their circuitry, wherein the object is not a living object,and wherein the auxiliary data pertains to the object, said mobiledevice, or an environment of the object or said mobile device.
 29. Amobile device as recited in claim 28, wherein said wirelesscommunication module supports a plurality of wireless networks.
 30. Amobile device as recited in claim 29, wherein the plurality of wirelessnetworks include at least a local area network, a wide area or globalnetwork.
 31. A mobile device as recited in claim 30, wherein the localarea network is one of a Bluetooth network and a Wi-Fi network, andwherein the wide area or the global network is a SMS network.
 32. Amobile device as recited in claim 28, wherein said mobile device furthercomprises an actuator.
 33. A mobile device as recited in claim 28,wherein the wireless communication module and the GPS receiver areformed on a single integrated circuit.
 34. A mobile device for acquiringstatus information pertaining to an object, said mobile device beingproximate to the object, said mobile device comprising: a wirelesscommunication module for receiving or transmitting signals in a wirelessmanner; a GPS receiver for receiving GPS data; at least one auxiliarysensor for acquiring auxiliary data; and a controller operativelyconnected to said wireless communication module, said GPS receiver, andsaid at least one auxiliary sensor; wherein said controller controlsoperation of said mobile device including acquisition of the GPS dataand the auxiliary data, and causes said wireless communication module toat least transmit information related to the GPS data and informationrelated to the auxiliary data to a remote server or another mobiledevice, wherein said wireless communication module and said GPS receivershare at least a portion of their circuitry, wherein the object is aliving object, and wherein the auxiliary data pertains to a healthcondition of the object, said mobile device, or an environment of theobject or said mobile device.